The primary immunodeficiency community often identifies with zebras. This is based on an old saying. In medical school, many doctors learn the saying, “when you hear hoof beats, think horses, not zebras” and are taught to focus on the likeliest possibilities when making a diagnosis, not the unusual ones. However, sometimes physicians need to look for a zebra. Patients with PI are the zebras of the medical world. So IDF says THINK ZEBRA!
Patients and family members can be seen wearing zebra striped clothes and using accessories adorned with black and white stripes. Children identify with zebras and it has been a way for children with PI to describe their disease to others—they are like zebras.